The formal standardization of the slip-box might seem to be at odds with our search for creativity. But here, too, it is more likely the opposite is true. Thinking and creativity can flourish under restricted conditions.

Sönke Ahrens, How to take smart notes: One simple technique to boost writing, learning and thinking – for students, academics and nonfiction book writers, Scotts Valley, CA, 2017, p. 138